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ICL7149 - (ICL7139 / ICL7149) 33/4 Digit Autoranging Multimeter

Download the ICL7149 datasheet PDF. This datasheet also covers the ICL7139 variant, as both devices belong to the same (icl7139 / icl7149) 33/4 digit autoranging multimeter family and are provided as variant models within a single manufacturer datasheet.

Description

The Intersil ICL7139 and ICL7149 are high performance, low power, auto-ranging digital multimeter lCs.

Unlike other autoranging multimeter ICs, the ICL7139 and ICL7149 always display the result of a conversion on the correct range.

There is no “range hunting” noticeable in the display.

Features

  • 13 Ranges - ICL7139 - 4 DC Voltage 400mV, 4V, 40V, 400V - 1 AC Voltage 400V - 4 DC Current 4mA, 40mA, 400mA, 4A - 4 Resistance 4kΩ , 40kΩ , 400kΩ , 4MΩ.
  • 18 Ranges - ICL7149 - 4 DC Voltage 400mV, 4V, 40V, 400V - 2 AC Voltage with Optional AC Circuit - 4 DC Current 4mA, 40mA, 400mA, 4A - 4 AC Current with Optional AC Circuit - 4 Resistance 4kΩ , 40kΩ , 400kΩ , 4MΩ.
  • Autoranging - First Reading is Always on Correct Range.
  • On-Chip Duplex LCD Display Drive Includin.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (ICL7139_IntersilCorporation.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Intersil (Renesas)

Part Number Description
ICL7101 (ICL7101 / ICL8052) 3 1/2 Digital A/D
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ICL7139 (ICL7139 / ICL7149) 33/4 Digit Autoranging Multimeter
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
ICL7139, ICL7149 August 1997 3 3/4 Digit, Autoranging Multimeter Description The Intersil ICL7139 and ICL7149 are high performance, low power, auto-ranging digital multimeter lCs. Unlike other autoranging multimeter ICs, the ICL7139 and ICL7149 always display the result of a conversion on the correct range. There is no “range hunting” noticeable in the display. The unit will autorange between the four different ranges. A manual switch is used to select the 2 high group ranges. DC current ranges are 4mA and 40mA in the low current group, and 400mA and 4A in the high current group. Resistance measurements are made on 4 ranges, which are divided into two groups. The low resistance ranges are 4/40kΩ . The high resistance ranges are 0.4/4MΩ . Resolution on the lowest range is 1Ω .
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